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http://dx.doi.org/10.7780/kjrs.2014.30.6.4

Improvement of Building-Construction Algorithm for Using GIS data and Analysis of Flow and Dispersion around Buildings  

Kwon, A-Rum (Department of Environmental Atmospheric Sciences, Pukyong National University)
Kim, Jae-Jin (Department of Environmental Atmospheric Sciences, Pukyong National University)
Publication Information
Korean Journal of Remote Sensing / v.30, no.6, 2014 , pp. 731-742 More about this Journal
Abstract
In this study, we developed a new algorithm which can construct model buildings used as a surface boundary in numerical models using GIS with latitudinal and longitudinal information of building vertices. The algorithm established the outer boundary of a building first, by finding segments passing neighboring two vertices of the building and connecting the segments. Then, the algorithm determined the region inside the outer boundary as the building. The new algorithm overcame the limit that the algorithm developed in the previous study had in constructing concave buildings. In addition, the new algorithm successfully constructed a building with complicated shape. To investigate effects of the modification in building shape caused by the building-construction algorithm on flows and pollutant dispersion around buildings, a computational fluid dynamics model was used and three kinds of building type were considered. In the downwind region, patterns in flow and pollutant dispersion were little affected by the modification in building shape caused. However, because of reduction in air space resulted from the building-shape modification, vortex structure was not resolved or smaller vortex was resolved near the buildings. The changes in flow pattern affected dispersion patterns of scalar pollutants emitted around the buildings.
Keywords
GIS; latitude and longitude; CFD model; building-construction algorithm;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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